kernel/drivers/media/usb/usbvision/usbvision-video.c

   1 /*
   2  * USB USBVISION Video device driver 0.9.10
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  *
  35  * TODO:
  36  *     - use submit_urb for all setup packets
  37  *     - Fix memory settings for nt1004. It is 4 times as big as the
  38  *       nt1003 memory.
  39  *     - Add audio on endpoint 3 for nt1004 chip.
  40  *         Seems impossible, needs a codec interface.  Which one?
  41  *     - Clean up the driver.
  42  *     - optimization for performance.
  43  *     - Add Videotext capability (VBI).  Working on it.....
  44  *     - Check audio for other devices
  45  *
  46  */
  47
  48 #include <linux/kernel.h>
  49 #include <linux/list.h>
  50 #include <linux/timer.h>
  51 #include <linux/slab.h>
  52 #include <linux/mm.h>
  53 #include <linux/highmem.h>
  54 #include <linux/vmalloc.h>
  55 #include <linux/module.h>
  56 #include <linux/init.h>
  57 #include <linux/spinlock.h>
  58 #include <linux/io.h>
  59 #include <linux/videodev2.h>
  60 #include <linux/i2c.h>
  61
  62 #include <media/saa7115.h>
  63 #include <media/v4l2-common.h>
  64 #include <media/v4l2-ioctl.h>
  65 #include <media/tuner.h>
  66
  67 #include <linux/workqueue.h>
  68
  69 #include "usbvision.h"
  70 #include "usbvision-cards.h"
  71
  72 #define DRIVER_AUTHOR                                   \
  73         "Joerg Heckenbach <joerg@heckenbach-aw.de>, "   \
  74         "Dwaine Garden <DwaineGarden@rogers.com>"
  75 #define DRIVER_NAME "usbvision"
  76 #define DRIVER_ALIAS "USBVision"
  77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  78 #define DRIVER_LICENSE "GPL"
  79 #define USBVISION_VERSION_STRING "0.9.11"
  80
  81 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  82
  83
  84 #ifdef USBVISION_DEBUG
  85         #define PDEBUG(level, fmt, args...) { \
  86                 if (video_debug & (level)) \
  87                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  88                                 __func__, __LINE__ , ## args); \
  89         }
  90 #else
  91         #define PDEBUG(level, fmt, args...) do {} while (0)
  92 #endif
  93
  94 #define DBG_IO          (1 << 1)
  95 #define DBG_PROBE       (1 << 2)
  96 #define DBG_MMAP        (1 << 3)
  97
  98 /* String operations */
  99 #define rmspace(str)    while (*str == ' ') str++;
 100 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
 101
 102
 103 /* sequential number of usbvision device */
 104 static int usbvision_nr;
 105
 106 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 107         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 108         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 109         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 110         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 111         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 112         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 113         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
 114         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 115 };
 116
 117 /* Function prototypes */
 118 static void usbvision_release(struct usb_usbvision *usbvision);
 119
 120 /* Default initialization of device driver parameters */
 121 /* Set the default format for ISOC endpoint */
 122 static int isoc_mode = ISOC_MODE_COMPRESS;
 123 /* Set the default Debug Mode of the device driver */
 124 static int video_debug;
 125 /* Set the default device to power on at startup */
 126 static int power_on_at_open = 1;
 127 /* Sequential Number of Video Device */
 128 static int video_nr = -1;
 129 /* Sequential Number of Radio Device */
 130 static int radio_nr = -1;
 131
 132 /* Grab parameters for the device driver */
 133
 134 /* Showing parameters under SYSFS */
 135 module_param(isoc_mode, int, 0444);
 136 module_param(video_debug, int, 0444);
 137 module_param(power_on_at_open, int, 0444);
 138 module_param(video_nr, int, 0444);
 139 module_param(radio_nr, int, 0444);
 140
 141 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 142 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 143 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened.  Default: 1 (On)");
 144 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 145 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 146
 147
 148 /* Misc stuff */
 149 MODULE_AUTHOR(DRIVER_AUTHOR);
 150 MODULE_DESCRIPTION(DRIVER_DESC);
 151 MODULE_LICENSE(DRIVER_LICENSE);
 152 MODULE_VERSION(USBVISION_VERSION_STRING);
 153 MODULE_ALIAS(DRIVER_ALIAS);
 154
 155
 156 /*****************************************************************************/
 157 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 158 /* Device information is located at /sys/class/video4linux/video0            */
 159 /* Device parameters information is located at /sys/module/usbvision         */
 160 /* Device USB Information is located at                                      */
 161 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 162 /*****************************************************************************/
 163
 164 #define YES_NO(x) ((x) ? "Yes" : "No")
 165
 166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 167 {
 168         struct video_device *vdev =
 169                 container_of(cd, struct video_device, dev);
 170         return video_get_drvdata(vdev);
 171 }
 172
 173 static ssize_t show_version(struct device *cd,
 174                             struct device_attribute *attr, char *buf)
 175 {
 176         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 177 }
 178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 179
 180 static ssize_t show_model(struct device *cd,
 181                           struct device_attribute *attr, char *buf)
 182 {
 183         struct video_device *vdev =
 184                 container_of(cd, struct video_device, dev);
 185         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 186         return sprintf(buf, "%s\n",
 187                        usbvision_device_data[usbvision->dev_model].model_string);
 188 }
 189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 190
 191 static ssize_t show_hue(struct device *cd,
 192                         struct device_attribute *attr, char *buf)
 193 {
 194         struct video_device *vdev =
 195                 container_of(cd, struct video_device, dev);
 196         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 197         struct v4l2_control ctrl;
 198         ctrl.id = V4L2_CID_HUE;
 199         ctrl.value = 0;
 200         if (usbvision->user)
 201                 call_all(usbvision, core, g_ctrl, &ctrl);
 202         return sprintf(buf, "%d\n", ctrl.value);
 203 }
 204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 205
 206 static ssize_t show_contrast(struct device *cd,
 207                              struct device_attribute *attr, char *buf)
 208 {
 209         struct video_device *vdev =
 210                 container_of(cd, struct video_device, dev);
 211         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 212         struct v4l2_control ctrl;
 213         ctrl.id = V4L2_CID_CONTRAST;
 214         ctrl.value = 0;
 215         if (usbvision->user)
 216                 call_all(usbvision, core, g_ctrl, &ctrl);
 217         return sprintf(buf, "%d\n", ctrl.value);
 218 }
 219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 220
 221 static ssize_t show_brightness(struct device *cd,
 222                                struct device_attribute *attr, char *buf)
 223 {
 224         struct video_device *vdev =
 225                 container_of(cd, struct video_device, dev);
 226         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 227         struct v4l2_control ctrl;
 228         ctrl.id = V4L2_CID_BRIGHTNESS;
 229         ctrl.value = 0;
 230         if (usbvision->user)
 231                 call_all(usbvision, core, g_ctrl, &ctrl);
 232         return sprintf(buf, "%d\n", ctrl.value);
 233 }
 234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 235
 236 static ssize_t show_saturation(struct device *cd,
 237                                struct device_attribute *attr, char *buf)
 238 {
 239         struct video_device *vdev =
 240                 container_of(cd, struct video_device, dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_SATURATION;
 244         ctrl.value = 0;
 245         if (usbvision->user)
 246                 call_all(usbvision, core, g_ctrl, &ctrl);
 247         return sprintf(buf, "%d\n", ctrl.value);
 248 }
 249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 250
 251 static ssize_t show_streaming(struct device *cd,
 252                               struct device_attribute *attr, char *buf)
 253 {
 254         struct video_device *vdev =
 255                 container_of(cd, struct video_device, dev);
 256         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 257         return sprintf(buf, "%s\n",
 258                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 259 }
 260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 261
 262 static ssize_t show_compression(struct device *cd,
 263                                 struct device_attribute *attr, char *buf)
 264 {
 265         struct video_device *vdev =
 266                 container_of(cd, struct video_device, dev);
 267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 268         return sprintf(buf, "%s\n",
 269                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 270 }
 271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 272
 273 static ssize_t show_device_bridge(struct device *cd,
 274                                   struct device_attribute *attr, char *buf)
 275 {
 276         struct video_device *vdev =
 277                 container_of(cd, struct video_device, dev);
 278         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 279         return sprintf(buf, "%d\n", usbvision->bridge_type);
 280 }
 281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 282
 283 static void usbvision_create_sysfs(struct video_device *vdev)
 284 {
 285         int res;
 286
 287         if (!vdev)
 288                 return;
 289         do {
 290                 res = device_create_file(&vdev->dev, &dev_attr_version);
 291                 if (res < 0)
 292                         break;
 293                 res = device_create_file(&vdev->dev, &dev_attr_model);
 294                 if (res < 0)
 295                         break;
 296                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 297                 if (res < 0)
 298                         break;
 299                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 300                 if (res < 0)
 301                         break;
 302                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 303                 if (res < 0)
 304                         break;
 305                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 306                 if (res < 0)
 307                         break;
 308                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 309                 if (res < 0)
 310                         break;
 311                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 312                 if (res < 0)
 313                         break;
 314                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 315                 if (res >= 0)
 316                         return;
 317         } while (0);
 318
 319         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 320 }
 321
 322 static void usbvision_remove_sysfs(struct video_device *vdev)
 323 {
 324         if (vdev) {
 325                 device_remove_file(&vdev->dev, &dev_attr_version);
 326                 device_remove_file(&vdev->dev, &dev_attr_model);
 327                 device_remove_file(&vdev->dev, &dev_attr_hue);
 328                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 329                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 330                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 331                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 332                 device_remove_file(&vdev->dev, &dev_attr_compression);
 333                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 334         }
 335 }
 336
 337 /*
 338  * usbvision_open()
 339  *
 340  * This is part of Video 4 Linux API. The driver can be opened by one
 341  * client only (checks internal counter 'usbvision->user'). The procedure
 342  * then allocates buffers needed for video processing.
 343  *
 344  */
 345 static int usbvision_v4l2_open(struct file *file)
 346 {
 347         struct usb_usbvision *usbvision = video_drvdata(file);
 348         int err_code = 0;
 349
 350         PDEBUG(DBG_IO, "open");
 351
 352         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
 353                 return -ERESTARTSYS;
 354         usbvision_reset_power_off_timer(usbvision);
 355
 356         if (usbvision->user)
 357                 err_code = -EBUSY;
 358         else {
 359                 /* Allocate memory for the scratch ring buffer */
 360                 err_code = usbvision_scratch_alloc(usbvision);
 361                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 362                         /* Allocate intermediate decompression buffers
 363                            only if needed */
 364                         err_code = usbvision_decompress_alloc(usbvision);
 365                 }
 366                 if (err_code) {
 367                         /* Deallocate all buffers if trouble */
 368                         usbvision_scratch_free(usbvision);
 369                         usbvision_decompress_free(usbvision);
 370                 }
 371         }
 372
 373         /* If so far no errors then we shall start the camera */
 374         if (!err_code) {
 375                 if (usbvision->power == 0) {
 376                         usbvision_power_on(usbvision);
 377                         usbvision_i2c_register(usbvision);
 378                 }
 379
 380                 /* Send init sequence only once, it's large! */
 381                 if (!usbvision->initialized) {
 382                         int setup_ok = 0;
 383                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 384                         if (setup_ok)
 385                                 usbvision->initialized = 1;
 386                         else
 387                                 err_code = -EBUSY;
 388                 }
 389
 390                 if (!err_code) {
 391                         usbvision_begin_streaming(usbvision);
 392                         err_code = usbvision_init_isoc(usbvision);
 393                         /* device must be initialized before isoc transfer */
 394                         usbvision_muxsel(usbvision, 0);
 395                         usbvision->user++;
 396                 } else {
 397                         if (power_on_at_open) {
 398                                 usbvision_i2c_unregister(usbvision);
 399                                 usbvision_power_off(usbvision);
 400                                 usbvision->initialized = 0;
 401                         }
 402                 }
 403         }
 404
 405         /* prepare queues */
 406         usbvision_empty_framequeues(usbvision);
 407         mutex_unlock(&usbvision->v4l2_lock);
 408
 409         PDEBUG(DBG_IO, "success");
 410         return err_code;
 411 }
 412
 413 /*
 414  * usbvision_v4l2_close()
 415  *
 416  * This is part of Video 4 Linux API. The procedure
 417  * stops streaming and deallocates all buffers that were earlier
 418  * allocated in usbvision_v4l2_open().
 419  *
 420  */
 421 static int usbvision_v4l2_close(struct file *file)
 422 {
 423         struct usb_usbvision *usbvision = video_drvdata(file);
 424
 425         PDEBUG(DBG_IO, "close");
 426
 427         mutex_lock(&usbvision->v4l2_lock);
 428         usbvision_audio_off(usbvision);
 429         usbvision_restart_isoc(usbvision);
 430         usbvision_stop_isoc(usbvision);
 431
 432         usbvision_decompress_free(usbvision);
 433         usbvision_frames_free(usbvision);
 434         usbvision_empty_framequeues(usbvision);
 435         usbvision_scratch_free(usbvision);
 436
 437         usbvision->user--;
 438
 439         if (power_on_at_open) {
 440                 /* power off in a little while
 441                    to avoid off/on every close/open short sequences */
 442                 usbvision_set_power_off_timer(usbvision);
 443                 usbvision->initialized = 0;
 444         }
 445
 446         if (usbvision->remove_pending) {
 447                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 448                 usbvision_release(usbvision);
 449                 return 0;
 450         }
 451         mutex_unlock(&usbvision->v4l2_lock);
 452
 453         PDEBUG(DBG_IO, "success");
 454         return 0;
 455 }
 456
 457
 458 /*
 459  * usbvision_ioctl()
 460  *
 461  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 462  *
 463  */
 464 #ifdef CONFIG_VIDEO_ADV_DEBUG
 465 static int vidioc_g_register(struct file *file, void *priv,
 466                                 struct v4l2_dbg_register *reg)
 467 {
 468         struct usb_usbvision *usbvision = video_drvdata(file);
 469         int err_code;
 470
 471         /* NT100x has a 8-bit register space */
 472         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 473         if (err_code < 0) {
 474                 dev_err(&usbvision->vdev.dev,
 475                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 476                                 __func__, err_code);
 477                 return err_code;
 478         }
 479         reg->val = err_code;
 480         reg->size = 1;
 481         return 0;
 482 }
 483
 484 static int vidioc_s_register(struct file *file, void *priv,
 485                                 const struct v4l2_dbg_register *reg)
 486 {
 487         struct usb_usbvision *usbvision = video_drvdata(file);
 488         int err_code;
 489
 490         /* NT100x has a 8-bit register space */
 491         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 492         if (err_code < 0) {
 493                 dev_err(&usbvision->vdev.dev,
 494                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 495                                 __func__, err_code);
 496                 return err_code;
 497         }
 498         return 0;
 499 }
 500 #endif
 501
 502 static int vidioc_querycap(struct file *file, void  *priv,
 503                                         struct v4l2_capability *vc)
 504 {
 505         struct usb_usbvision *usbvision = video_drvdata(file);
 506
 507         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 508         strlcpy(vc->card,
 509                 usbvision_device_data[usbvision->dev_model].model_string,
 510                 sizeof(vc->card));
 511         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 512         vc->device_caps = V4L2_CAP_VIDEO_CAPTURE |
 513                 V4L2_CAP_AUDIO |
 514                 V4L2_CAP_READWRITE |
 515                 V4L2_CAP_STREAMING |
 516                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 517         vc->capabilities = vc->device_caps | V4L2_CAP_DEVICE_CAPS;
 518         return 0;
 519 }
 520
 521 static int vidioc_enum_input(struct file *file, void *priv,
 522                                 struct v4l2_input *vi)
 523 {
 524         struct usb_usbvision *usbvision = video_drvdata(file);
 525         int chan;
 526
 527         if (vi->index >= usbvision->video_inputs)
 528                 return -EINVAL;
 529         if (usbvision->have_tuner)
 530                 chan = vi->index;
 531         else
 532                 chan = vi->index + 1; /* skip Television string*/
 533
 534         /* Determine the requested input characteristics
 535            specific for each usbvision card model */
 536         switch (chan) {
 537         case 0:
 538                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 539                         strcpy(vi->name, "White Video Input");
 540                 } else {
 541                         strcpy(vi->name, "Television");
 542                         vi->type = V4L2_INPUT_TYPE_TUNER;
 543                         vi->audioset = 1;
 544                         vi->tuner = chan;
 545                         vi->std = USBVISION_NORMS;
 546                 }
 547                 break;
 548         case 1:
 549                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 550                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 551                         strcpy(vi->name, "Green Video Input");
 552                 else
 553                         strcpy(vi->name, "Composite Video Input");
 554                 vi->std = V4L2_STD_PAL;
 555                 break;
 556         case 2:
 557                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 558                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 559                         strcpy(vi->name, "Yellow Video Input");
 560                 else
 561                         strcpy(vi->name, "S-Video Input");
 562                 vi->std = V4L2_STD_PAL;
 563                 break;
 564         case 3:
 565                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 566                 strcpy(vi->name, "Red Video Input");
 567                 vi->std = V4L2_STD_PAL;
 568                 break;
 569         }
 570         return 0;
 571 }
 572
 573 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 574 {
 575         struct usb_usbvision *usbvision = video_drvdata(file);
 576
 577         *input = usbvision->ctl_input;
 578         return 0;
 579 }
 580
 581 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 582 {
 583         struct usb_usbvision *usbvision = video_drvdata(file);
 584
 585         if (input >= usbvision->video_inputs)
 586                 return -EINVAL;
 587
 588         usbvision_muxsel(usbvision, input);
 589         usbvision_set_input(usbvision);
 590         usbvision_set_output(usbvision,
 591                              usbvision->curwidth,
 592                              usbvision->curheight);
 593         return 0;
 594 }
 595
 596 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
 597 {
 598         struct usb_usbvision *usbvision = video_drvdata(file);
 599
 600         usbvision->tvnorm_id = id;
 601
 602         call_all(usbvision, video, s_std, usbvision->tvnorm_id);
 603         /* propagate the change to the decoder */
 604         usbvision_muxsel(usbvision, usbvision->ctl_input);
 605
 606         return 0;
 607 }
 608
 609 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 610 {
 611         struct usb_usbvision *usbvision = video_drvdata(file);
 612
 613         *id = usbvision->tvnorm_id;
 614         return 0;
 615 }
 616
 617 static int vidioc_g_tuner(struct file *file, void *priv,
 618                                 struct v4l2_tuner *vt)
 619 {
 620         struct usb_usbvision *usbvision = video_drvdata(file);
 621
 622         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
 623                 return -EINVAL;
 624         if (usbvision->radio) {
 625                 strcpy(vt->name, "Radio");
 626                 vt->type = V4L2_TUNER_RADIO;
 627         } else {
 628                 strcpy(vt->name, "Television");
 629         }
 630         /* Let clients fill in the remainder of this struct */
 631         call_all(usbvision, tuner, g_tuner, vt);
 632
 633         return 0;
 634 }
 635
 636 static int vidioc_s_tuner(struct file *file, void *priv,
 637                                 const struct v4l2_tuner *vt)
 638 {
 639         struct usb_usbvision *usbvision = video_drvdata(file);
 640
 641         /* Only no or one tuner for now */
 642         if (!usbvision->have_tuner || vt->index)
 643                 return -EINVAL;
 644         /* let clients handle this */
 645         call_all(usbvision, tuner, s_tuner, vt);
 646
 647         return 0;
 648 }
 649
 650 static int vidioc_g_frequency(struct file *file, void *priv,
 651                                 struct v4l2_frequency *freq)
 652 {
 653         struct usb_usbvision *usbvision = video_drvdata(file);
 654
 655         freq->tuner = 0; /* Only one tuner */
 656         if (usbvision->radio)
 657                 freq->type = V4L2_TUNER_RADIO;
 658         else
 659                 freq->type = V4L2_TUNER_ANALOG_TV;
 660         freq->frequency = usbvision->freq;
 661
 662         return 0;
 663 }
 664
 665 static int vidioc_s_frequency(struct file *file, void *priv,
 666                                 const struct v4l2_frequency *freq)
 667 {
 668         struct usb_usbvision *usbvision = video_drvdata(file);
 669
 670         /* Only no or one tuner for now */
 671         if (!usbvision->have_tuner || freq->tuner)
 672                 return -EINVAL;
 673
 674         usbvision->freq = freq->frequency;
 675         call_all(usbvision, tuner, s_frequency, freq);
 676
 677         return 0;
 678 }
 679
 680 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 681 {
 682         struct usb_usbvision *usbvision = video_drvdata(file);
 683
 684         if (usbvision->radio)
 685                 strcpy(a->name, "Radio");
 686         else
 687                 strcpy(a->name, "TV");
 688
 689         return 0;
 690 }
 691
 692 static int vidioc_s_audio(struct file *file, void *fh,
 693                           const struct v4l2_audio *a)
 694 {
 695         if (a->index)
 696                 return -EINVAL;
 697         return 0;
 698 }
 699
 700 static int vidioc_queryctrl(struct file *file, void *priv,
 701                             struct v4l2_queryctrl *ctrl)
 702 {
 703         struct usb_usbvision *usbvision = video_drvdata(file);
 704
 705         call_all(usbvision, core, queryctrl, ctrl);
 706
 707         if (!ctrl->type)
 708                 return -EINVAL;
 709
 710         return 0;
 711 }
 712
 713 static int vidioc_g_ctrl(struct file *file, void *priv,
 714                                 struct v4l2_control *ctrl)
 715 {
 716         struct usb_usbvision *usbvision = video_drvdata(file);
 717
 718         call_all(usbvision, core, g_ctrl, ctrl);
 719         return 0;
 720 }
 721
 722 static int vidioc_s_ctrl(struct file *file, void *priv,
 723                                 struct v4l2_control *ctrl)
 724 {
 725         struct usb_usbvision *usbvision = video_drvdata(file);
 726
 727         call_all(usbvision, core, s_ctrl, ctrl);
 728         return 0;
 729 }
 730
 731 static int vidioc_reqbufs(struct file *file,
 732                            void *priv, struct v4l2_requestbuffers *vr)
 733 {
 734         struct usb_usbvision *usbvision = video_drvdata(file);
 735         int ret;
 736
 737         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 738
 739         /* Check input validity:
 740            the user must do a VIDEO CAPTURE and MMAP method. */
 741         if (vr->memory != V4L2_MEMORY_MMAP)
 742                 return -EINVAL;
 743
 744         if (usbvision->streaming == stream_on) {
 745                 ret = usbvision_stream_interrupt(usbvision);
 746                 if (ret)
 747                         return ret;
 748         }
 749
 750         usbvision_frames_free(usbvision);
 751         usbvision_empty_framequeues(usbvision);
 752         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 753
 754         usbvision->cur_frame = NULL;
 755
 756         return 0;
 757 }
 758
 759 static int vidioc_querybuf(struct file *file,
 760                             void *priv, struct v4l2_buffer *vb)
 761 {
 762         struct usb_usbvision *usbvision = video_drvdata(file);
 763         struct usbvision_frame *frame;
 764
 765         /* FIXME : must control
 766            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 767         if (vb->index >= usbvision->num_frames)
 768                 return -EINVAL;
 769         /* Updating the corresponding frame state */
 770         vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 771         frame = &usbvision->frame[vb->index];
 772         if (frame->grabstate >= frame_state_ready)
 773                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 774         if (frame->grabstate >= frame_state_done)
 775                 vb->flags |= V4L2_BUF_FLAG_DONE;
 776         if (frame->grabstate == frame_state_unused)
 777                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 778         vb->memory = V4L2_MEMORY_MMAP;
 779
 780         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 781
 782         vb->memory = V4L2_MEMORY_MMAP;
 783         vb->field = V4L2_FIELD_NONE;
 784         vb->length = usbvision->curwidth *
 785                 usbvision->curheight *
 786                 usbvision->palette.bytes_per_pixel;
 787         vb->timestamp = usbvision->frame[vb->index].timestamp;
 788         vb->sequence = usbvision->frame[vb->index].sequence;
 789         return 0;
 790 }
 791
 792 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 793 {
 794         struct usb_usbvision *usbvision = video_drvdata(file);
 795         struct usbvision_frame *frame;
 796         unsigned long lock_flags;
 797
 798         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 799         if (vb->index >= usbvision->num_frames)
 800                 return -EINVAL;
 801
 802         frame = &usbvision->frame[vb->index];
 803
 804         if (frame->grabstate != frame_state_unused)
 805                 return -EAGAIN;
 806
 807         /* Mark it as ready and enqueue frame */
 808         frame->grabstate = frame_state_ready;
 809         frame->scanstate = scan_state_scanning;
 810         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 811
 812         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 813
 814         /* set v4l2_format index */
 815         frame->v4l2_format = usbvision->palette;
 816
 817         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 818         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 819         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 820
 821         return 0;
 822 }
 823
 824 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 825 {
 826         struct usb_usbvision *usbvision = video_drvdata(file);
 827         int ret;
 828         struct usbvision_frame *f;
 829         unsigned long lock_flags;
 830
 831         if (list_empty(&(usbvision->outqueue))) {
 832                 if (usbvision->streaming == stream_idle)
 833                         return -EINVAL;
 834                 ret = wait_event_interruptible
 835                         (usbvision->wait_frame,
 836                          !list_empty(&(usbvision->outqueue)));
 837                 if (ret)
 838                         return ret;
 839         }
 840
 841         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 842         f = list_entry(usbvision->outqueue.next,
 843                        struct usbvision_frame, frame);
 844         list_del(usbvision->outqueue.next);
 845         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 846
 847         f->grabstate = frame_state_unused;
 848
 849         vb->memory = V4L2_MEMORY_MMAP;
 850         vb->flags = V4L2_BUF_FLAG_MAPPED |
 851                 V4L2_BUF_FLAG_QUEUED |
 852                 V4L2_BUF_FLAG_DONE |
 853                 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 854         vb->index = f->index;
 855         vb->sequence = f->sequence;
 856         vb->timestamp = f->timestamp;
 857         vb->field = V4L2_FIELD_NONE;
 858         vb->bytesused = f->scanlength;
 859
 860         return 0;
 861 }
 862
 863 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 864 {
 865         struct usb_usbvision *usbvision = video_drvdata(file);
 866
 867         usbvision->streaming = stream_on;
 868         call_all(usbvision, video, s_stream, 1);
 869
 870         return 0;
 871 }
 872
 873 static int vidioc_streamoff(struct file *file,
 874                             void *priv, enum v4l2_buf_type type)
 875 {
 876         struct usb_usbvision *usbvision = video_drvdata(file);
 877
 878         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 879                 return -EINVAL;
 880
 881         if (usbvision->streaming == stream_on) {
 882                 usbvision_stream_interrupt(usbvision);
 883                 /* Stop all video streamings */
 884                 call_all(usbvision, video, s_stream, 0);
 885         }
 886         usbvision_empty_framequeues(usbvision);
 887
 888         return 0;
 889 }
 890
 891 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 892                                         struct v4l2_fmtdesc *vfd)
 893 {
 894         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 895                 return -EINVAL;
 896         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 897         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 898         return 0;
 899 }
 900
 901 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 902                                         struct v4l2_format *vf)
 903 {
 904         struct usb_usbvision *usbvision = video_drvdata(file);
 905         vf->fmt.pix.width = usbvision->curwidth;
 906         vf->fmt.pix.height = usbvision->curheight;
 907         vf->fmt.pix.pixelformat = usbvision->palette.format;
 908         vf->fmt.pix.bytesperline =
 909                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 910         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 911         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 912         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 913
 914         return 0;
 915 }
 916
 917 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 918                                struct v4l2_format *vf)
 919 {
 920         struct usb_usbvision *usbvision = video_drvdata(file);
 921         int format_idx;
 922
 923         /* Find requested format in available ones */
 924         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 925                 if (vf->fmt.pix.pixelformat ==
 926                    usbvision_v4l2_format[format_idx].format) {
 927                         usbvision->palette = usbvision_v4l2_format[format_idx];
 928                         break;
 929                 }
 930         }
 931         /* robustness */
 932         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 933                 return -EINVAL;
 934         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 935         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 936
 937         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 938                 usbvision->palette.bytes_per_pixel;
 939         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 940
 941         return 0;
 942 }
 943
 944 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 945                                struct v4l2_format *vf)
 946 {
 947         struct usb_usbvision *usbvision = video_drvdata(file);
 948         int ret;
 949
 950         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 951         if (ret)
 952                 return ret;
 953
 954         /* stop io in case it is already in progress */
 955         if (usbvision->streaming == stream_on) {
 956                 ret = usbvision_stream_interrupt(usbvision);
 957                 if (ret)
 958                         return ret;
 959         }
 960         usbvision_frames_free(usbvision);
 961         usbvision_empty_framequeues(usbvision);
 962
 963         usbvision->cur_frame = NULL;
 964
 965         /* by now we are committed to the new data... */
 966         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 967
 968         return 0;
 969 }
 970
 971 static ssize_t usbvision_read(struct file *file, char __user *buf,
 972                       size_t count, loff_t *ppos)
 973 {
 974         struct usb_usbvision *usbvision = video_drvdata(file);
 975         int noblock = file->f_flags & O_NONBLOCK;
 976         unsigned long lock_flags;
 977         int ret, i;
 978         struct usbvision_frame *frame;
 979
 980         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 981                (unsigned long)count, noblock);
 982
 983         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 984                 return -EFAULT;
 985
 986         /* This entry point is compatible with the mmap routines
 987            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 988            to get frames or call read on the device. */
 989         if (!usbvision->num_frames) {
 990                 /* First, allocate some frames to work with
 991                    if this has not been done with VIDIOC_REQBUF */
 992                 usbvision_frames_free(usbvision);
 993                 usbvision_empty_framequeues(usbvision);
 994                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 995         }
 996
 997         if (usbvision->streaming != stream_on) {
 998                 /* no stream is running, make it running ! */
 999                 usbvision->streaming = stream_on;
1000                 call_all(usbvision, video, s_stream, 1);
1001         }
1002
1003         /* Then, enqueue as many frames as possible
1004            (like a user of VIDIOC_QBUF would do) */
1005         for (i = 0; i < usbvision->num_frames; i++) {
1006                 frame = &usbvision->frame[i];
1007                 if (frame->grabstate == frame_state_unused) {
1008                         /* Mark it as ready and enqueue frame */
1009                         frame->grabstate = frame_state_ready;
1010                         frame->scanstate = scan_state_scanning;
1011                         /* Accumulated in usbvision_parse_data() */
1012                         frame->scanlength = 0;
1013
1014                         /* set v4l2_format index */
1015                         frame->v4l2_format = usbvision->palette;
1016
1017                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1018                         list_add_tail(&frame->frame, &usbvision->inqueue);
1019                         spin_unlock_irqrestore(&usbvision->queue_lock,
1020                                                lock_flags);
1021                 }
1022         }
1023
1024         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1025         if (list_empty(&(usbvision->outqueue))) {
1026                 if (noblock)
1027                         return -EAGAIN;
1028
1029                 ret = wait_event_interruptible
1030                         (usbvision->wait_frame,
1031                          !list_empty(&(usbvision->outqueue)));
1032                 if (ret)
1033                         return ret;
1034         }
1035
1036         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1037         frame = list_entry(usbvision->outqueue.next,
1038                            struct usbvision_frame, frame);
1039         list_del(usbvision->outqueue.next);
1040         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1041
1042         /* An error returns an empty frame */
1043         if (frame->grabstate == frame_state_error) {
1044                 frame->bytes_read = 0;
1045                 return 0;
1046         }
1047
1048         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1049                __func__,
1050                frame->index, frame->bytes_read, frame->scanlength);
1051
1052         /* copy bytes to user space; we allow for partials reads */
1053         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1054                 count = frame->scanlength - frame->bytes_read;
1055
1056         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1057                 return -EFAULT;
1058
1059         frame->bytes_read += count;
1060         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1061                __func__,
1062                (unsigned long)count, frame->bytes_read);
1063
1064         /* For now, forget the frame if it has not been read in one shot. */
1065 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1066                 frame->bytes_read = 0;
1067
1068                 /* Mark it as available to be used again. */
1069                 frame->grabstate = frame_state_unused;
1070 /*      } */
1071
1072         return count;
1073 }
1074
1075 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1076                       size_t count, loff_t *ppos)
1077 {
1078         struct usb_usbvision *usbvision = video_drvdata(file);
1079         int res;
1080
1081         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1082                 return -ERESTARTSYS;
1083         res = usbvision_read(file, buf, count, ppos);
1084         mutex_unlock(&usbvision->v4l2_lock);
1085         return res;
1086 }
1087
1088 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1089 {
1090         unsigned long size = vma->vm_end - vma->vm_start,
1091                 start = vma->vm_start;
1092         void *pos;
1093         u32 i;
1094         struct usb_usbvision *usbvision = video_drvdata(file);
1095
1096         PDEBUG(DBG_MMAP, "mmap");
1097
1098         if (!USBVISION_IS_OPERATIONAL(usbvision))
1099                 return -EFAULT;
1100
1101         if (!(vma->vm_flags & VM_WRITE) ||
1102             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1103                 return -EINVAL;
1104         }
1105
1106         for (i = 0; i < usbvision->num_frames; i++) {
1107                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1108                     vma->vm_pgoff)
1109                         break;
1110         }
1111         if (i == usbvision->num_frames) {
1112                 PDEBUG(DBG_MMAP,
1113                        "mmap: user supplied mapping address is out of range");
1114                 return -EINVAL;
1115         }
1116
1117         /* VM_IO is eventually going to replace PageReserved altogether */
1118         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1119
1120         pos = usbvision->frame[i].data;
1121         while (size > 0) {
1122                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1123                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1124                         return -EAGAIN;
1125                 }
1126                 start += PAGE_SIZE;
1127                 pos += PAGE_SIZE;
1128                 size -= PAGE_SIZE;
1129         }
1130
1131         return 0;
1132 }
1133
1134 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1135 {
1136         struct usb_usbvision *usbvision = video_drvdata(file);
1137         int res;
1138
1139         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1140                 return -ERESTARTSYS;
1141         res = usbvision_mmap(file, vma);
1142         mutex_unlock(&usbvision->v4l2_lock);
1143         return res;
1144 }
1145
1146 /*
1147  * Here comes the stuff for radio on usbvision based devices
1148  *
1149  */
1150 static int usbvision_radio_open(struct file *file)
1151 {
1152         struct usb_usbvision *usbvision = video_drvdata(file);
1153         int err_code = 0;
1154
1155         PDEBUG(DBG_IO, "%s:", __func__);
1156
1157         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1158                 return -ERESTARTSYS;
1159         if (usbvision->user) {
1160                 dev_err(&usbvision->rdev.dev,
1161                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1162                                 __func__);
1163                 err_code = -EBUSY;
1164         } else {
1165                 if (power_on_at_open) {
1166                         usbvision_reset_power_off_timer(usbvision);
1167                         if (usbvision->power == 0) {
1168                                 usbvision_power_on(usbvision);
1169                                 usbvision_i2c_register(usbvision);
1170                         }
1171                 }
1172
1173                 /* Alternate interface 1 is is the biggest frame size */
1174                 err_code = usbvision_set_alternate(usbvision);
1175                 if (err_code < 0) {
1176                         usbvision->last_error = err_code;
1177                         err_code = -EBUSY;
1178                         goto out;
1179                 }
1180
1181                 /* If so far no errors then we shall start the radio */
1182                 usbvision->radio = 1;
1183                 call_all(usbvision, tuner, s_radio);
1184                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1185                 usbvision->user++;
1186         }
1187
1188         if (err_code) {
1189                 if (power_on_at_open) {
1190                         usbvision_i2c_unregister(usbvision);
1191                         usbvision_power_off(usbvision);
1192                         usbvision->initialized = 0;
1193                 }
1194         }
1195 out:
1196         mutex_unlock(&usbvision->v4l2_lock);
1197         return err_code;
1198 }
1199
1200
1201 static int usbvision_radio_close(struct file *file)
1202 {
1203         struct usb_usbvision *usbvision = video_drvdata(file);
1204         int err_code = 0;
1205
1206         PDEBUG(DBG_IO, "");
1207
1208         mutex_lock(&usbvision->v4l2_lock);
1209         /* Set packet size to 0 */
1210         usbvision->iface_alt = 0;
1211         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1212                                     usbvision->iface_alt);
1213
1214         usbvision_audio_off(usbvision);
1215         usbvision->radio = 0;
1216         usbvision->user--;
1217
1218         if (power_on_at_open) {
1219                 usbvision_set_power_off_timer(usbvision);
1220                 usbvision->initialized = 0;
1221         }
1222
1223         if (usbvision->remove_pending) {
1224                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1225                 usbvision_release(usbvision);
1226                 return err_code;
1227         }
1228
1229         mutex_unlock(&usbvision->v4l2_lock);
1230         PDEBUG(DBG_IO, "success");
1231         return err_code;
1232 }
1233
1234 /* Video registration stuff */
1235
1236 /* Video template */
1237 static const struct v4l2_file_operations usbvision_fops = {
1238         .owner             = THIS_MODULE,
1239         .open           = usbvision_v4l2_open,
1240         .release        = usbvision_v4l2_close,
1241         .read           = usbvision_v4l2_read,
1242         .mmap           = usbvision_v4l2_mmap,
1243         .unlocked_ioctl = video_ioctl2,
1244 /*      .poll           = video_poll, */
1245 };
1246
1247 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1248         .vidioc_querycap      = vidioc_querycap,
1249         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1250         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1251         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1252         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1253         .vidioc_reqbufs       = vidioc_reqbufs,
1254         .vidioc_querybuf      = vidioc_querybuf,
1255         .vidioc_qbuf          = vidioc_qbuf,
1256         .vidioc_dqbuf         = vidioc_dqbuf,
1257         .vidioc_s_std         = vidioc_s_std,
1258         .vidioc_g_std         = vidioc_g_std,
1259         .vidioc_enum_input    = vidioc_enum_input,
1260         .vidioc_g_input       = vidioc_g_input,
1261         .vidioc_s_input       = vidioc_s_input,
1262         .vidioc_queryctrl     = vidioc_queryctrl,
1263         .vidioc_g_audio       = vidioc_g_audio,
1264         .vidioc_s_audio       = vidioc_s_audio,
1265         .vidioc_g_ctrl        = vidioc_g_ctrl,
1266         .vidioc_s_ctrl        = vidioc_s_ctrl,
1267         .vidioc_streamon      = vidioc_streamon,
1268         .vidioc_streamoff     = vidioc_streamoff,
1269         .vidioc_g_tuner       = vidioc_g_tuner,
1270         .vidioc_s_tuner       = vidioc_s_tuner,
1271         .vidioc_g_frequency   = vidioc_g_frequency,
1272         .vidioc_s_frequency   = vidioc_s_frequency,
1273 #ifdef CONFIG_VIDEO_ADV_DEBUG
1274         .vidioc_g_register    = vidioc_g_register,
1275         .vidioc_s_register    = vidioc_s_register,
1276 #endif
1277 };
1278
1279 static struct video_device usbvision_video_template = {
1280         .fops           = &usbvision_fops,
1281         .ioctl_ops      = &usbvision_ioctl_ops,
1282         .name           = "usbvision-video",
1283         .release        = video_device_release_empty,
1284         .tvnorms        = USBVISION_NORMS,
1285 };
1286
1287
1288 /* Radio template */
1289 static const struct v4l2_file_operations usbvision_radio_fops = {
1290         .owner             = THIS_MODULE,
1291         .open           = usbvision_radio_open,
1292         .release        = usbvision_radio_close,
1293         .unlocked_ioctl = video_ioctl2,
1294 };
1295
1296 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1297         .vidioc_querycap      = vidioc_querycap,
1298         .vidioc_enum_input    = vidioc_enum_input,
1299         .vidioc_g_input       = vidioc_g_input,
1300         .vidioc_s_input       = vidioc_s_input,
1301         .vidioc_queryctrl     = vidioc_queryctrl,
1302         .vidioc_g_audio       = vidioc_g_audio,
1303         .vidioc_s_audio       = vidioc_s_audio,
1304         .vidioc_g_ctrl        = vidioc_g_ctrl,
1305         .vidioc_s_ctrl        = vidioc_s_ctrl,
1306         .vidioc_g_tuner       = vidioc_g_tuner,
1307         .vidioc_s_tuner       = vidioc_s_tuner,
1308         .vidioc_g_frequency   = vidioc_g_frequency,
1309         .vidioc_s_frequency   = vidioc_s_frequency,
1310 };
1311
1312 static struct video_device usbvision_radio_template = {
1313         .fops           = &usbvision_radio_fops,
1314         .name           = "usbvision-radio",
1315         .release        = video_device_release_empty,
1316         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1317 };
1318
1319
1320 static void usbvision_vdev_init(struct usb_usbvision *usbvision,
1321                                 struct video_device *vdev,
1322                                 const struct video_device *vdev_template,
1323                                 const char *name)
1324 {
1325         struct usb_device *usb_dev = usbvision->dev;
1326
1327         if (usb_dev == NULL) {
1328                 dev_err(&usbvision->dev->dev,
1329                         "%s: usbvision->dev is not set\n", __func__);
1330                 return;
1331         }
1332
1333         *vdev = *vdev_template;
1334         vdev->lock = &usbvision->v4l2_lock;
1335         vdev->v4l2_dev = &usbvision->v4l2_dev;
1336         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1337         video_set_drvdata(vdev, usbvision);
1338 }
1339
1340 /* unregister video4linux devices */
1341 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1342 {
1343         /* Radio Device: */
1344         if (video_is_registered(&usbvision->rdev)) {
1345                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1346                        video_device_node_name(&usbvision->rdev));
1347                 video_unregister_device(&usbvision->rdev);
1348         }
1349
1350         /* Video Device: */
1351         if (video_is_registered(&usbvision->vdev)) {
1352                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1353                        video_device_node_name(&usbvision->vdev));
1354                 video_unregister_device(&usbvision->vdev);
1355         }
1356 }
1357
1358 /* register video4linux devices */
1359 static int usbvision_register_video(struct usb_usbvision *usbvision)
1360 {
1361         /* Video Device: */
1362         usbvision_vdev_init(usbvision, &usbvision->vdev,
1363                               &usbvision_video_template, "USBVision Video");
1364         if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1365                 goto err_exit;
1366         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1367                usbvision->nr, video_device_node_name(&usbvision->vdev));
1368
1369         /* Radio Device: */
1370         if (usbvision_device_data[usbvision->dev_model].radio) {
1371                 /* usbvision has radio */
1372                 usbvision_vdev_init(usbvision, &usbvision->rdev,
1373                               &usbvision_radio_template, "USBVision Radio");
1374                 if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1375                         goto err_exit;
1376                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1377                        usbvision->nr, video_device_node_name(&usbvision->rdev));
1378         }
1379         /* all done */
1380         return 0;
1381
1382  err_exit:
1383         dev_err(&usbvision->dev->dev,
1384                 "USBVision[%d]: video_register_device() failed\n",
1385                         usbvision->nr);
1386         usbvision_unregister_video(usbvision);
1387         return -1;
1388 }
1389
1390 /*
1391  * usbvision_alloc()
1392  *
1393  * This code allocates the struct usb_usbvision.
1394  * It is filled with default values.
1395  *
1396  * Returns NULL on error, a pointer to usb_usbvision else.
1397  *
1398  */
1399 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1400                                              struct usb_interface *intf)
1401 {
1402         struct usb_usbvision *usbvision;
1403
1404         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1405         if (usbvision == NULL)
1406                 return NULL;
1407
1408         usbvision->dev = dev;
1409         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1410                 goto err_free;
1411
1412         mutex_init(&usbvision->v4l2_lock);
1413
1414         /* prepare control urb for control messages during interrupts */
1415         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1416         if (usbvision->ctrl_urb == NULL)
1417                 goto err_unreg;
1418         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1419
1420         usbvision_init_power_off_timer(usbvision);
1421
1422         return usbvision;
1423
1424 err_unreg:
1425         v4l2_device_unregister(&usbvision->v4l2_dev);
1426 err_free:
1427         kfree(usbvision);
1428         return NULL;
1429 }
1430
1431 /*
1432  * usbvision_release()
1433  *
1434  * This code does final release of struct usb_usbvision. This happens
1435  * after the device is disconnected -and- all clients closed their files.
1436  *
1437  */
1438 static void usbvision_release(struct usb_usbvision *usbvision)
1439 {
1440         PDEBUG(DBG_PROBE, "");
1441
1442         usbvision_reset_power_off_timer(usbvision);
1443
1444         usbvision->initialized = 0;
1445
1446         usbvision_remove_sysfs(&usbvision->vdev);
1447         usbvision_unregister_video(usbvision);
1448         kfree(usbvision->alt_max_pkt_size);
1449
1450         usb_free_urb(usbvision->ctrl_urb);
1451
1452         v4l2_device_unregister(&usbvision->v4l2_dev);
1453         kfree(usbvision);
1454
1455         PDEBUG(DBG_PROBE, "success");
1456 }
1457
1458
1459 /*********************** usb interface **********************************/
1460
1461 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1462 {
1463         int model;
1464
1465         if (usbvision == NULL)
1466                 return;
1467
1468         model = usbvision->dev_model;
1469         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1470
1471         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1472                 usbvision->vin_reg2_preset =
1473                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1474         } else {
1475                 usbvision->vin_reg2_preset = 0;
1476         }
1477
1478         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1479
1480         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1481         usbvision->ctl_input = 0;
1482
1483         /* This should be here to make i2c clients to be able to register */
1484         /* first switch off audio */
1485         if (usbvision_device_data[model].audio_channels > 0)
1486                 usbvision_audio_off(usbvision);
1487         if (!power_on_at_open) {
1488                 /* and then power up the noisy tuner */
1489                 usbvision_power_on(usbvision);
1490                 usbvision_i2c_register(usbvision);
1491         }
1492 }
1493
1494 /*
1495  * usbvision_probe()
1496  *
1497  * This procedure queries device descriptor and accepts the interface
1498  * if it looks like USBVISION video device
1499  *
1500  */
1501 static int usbvision_probe(struct usb_interface *intf,
1502                            const struct usb_device_id *devid)
1503 {
1504         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1505         struct usb_interface *uif;
1506         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1507         const struct usb_host_interface *interface;
1508         struct usb_usbvision *usbvision = NULL;
1509         const struct usb_endpoint_descriptor *endpoint;
1510         int model, i, ret;
1511
1512         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1513                                 dev->descriptor.idVendor,
1514                                 dev->descriptor.idProduct, ifnum);
1515
1516         model = devid->driver_info;
1517         if (model < 0 || model >= usbvision_device_data_size) {
1518                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1519                 ret = -ENODEV;
1520                 goto err_usb;
1521         }
1522         printk(KERN_INFO "%s: %s found\n", __func__,
1523                                 usbvision_device_data[model].model_string);
1524
1525         if (usbvision_device_data[model].interface >= 0)
1526                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1527         else
1528                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1529         endpoint = &interface->endpoint[1].desc;
1530         if (!usb_endpoint_xfer_isoc(endpoint)) {
1531                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1532                     __func__, ifnum);
1533                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1534                     __func__, endpoint->bmAttributes);
1535                 ret = -ENODEV;
1536                 goto err_usb;
1537         }
1538         if (usb_endpoint_dir_out(endpoint)) {
1539                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1540                     __func__, ifnum);
1541                 ret = -ENODEV;
1542                 goto err_usb;
1543         }
1544
1545         usbvision = usbvision_alloc(dev, intf);
1546         if (usbvision == NULL) {
1547                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1548                 ret = -ENOMEM;
1549                 goto err_usb;
1550         }
1551
1552         if (dev->descriptor.bNumConfigurations > 1)
1553                 usbvision->bridge_type = BRIDGE_NT1004;
1554         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1555                 usbvision->bridge_type = BRIDGE_NT1005;
1556         else
1557                 usbvision->bridge_type = BRIDGE_NT1003;
1558         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1559
1560         /* compute alternate max packet sizes */
1561         uif = dev->actconfig->interface[0];
1562
1563         usbvision->num_alt = uif->num_altsetting;
1564         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1565         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1566         if (usbvision->alt_max_pkt_size == NULL) {
1567                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1568                 ret = -ENOMEM;
1569                 goto err_pkt;
1570         }
1571
1572         for (i = 0; i < usbvision->num_alt; i++) {
1573                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1574                                       wMaxPacketSize);
1575                 usbvision->alt_max_pkt_size[i] =
1576                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1577                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1578                        usbvision->alt_max_pkt_size[i]);
1579         }
1580
1581
1582         usbvision->nr = usbvision_nr++;
1583
1584         usbvision->have_tuner = usbvision_device_data[model].tuner;
1585         if (usbvision->have_tuner)
1586                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1587
1588         usbvision->dev_model = model;
1589         usbvision->remove_pending = 0;
1590         usbvision->iface = ifnum;
1591         usbvision->iface_alt = 0;
1592         usbvision->video_endp = endpoint->bEndpointAddress;
1593         usbvision->isoc_packet_size = 0;
1594         usbvision->usb_bandwidth = 0;
1595         usbvision->user = 0;
1596         usbvision->streaming = stream_off;
1597         usbvision_configure_video(usbvision);
1598         usbvision_register_video(usbvision);
1599
1600         usbvision_create_sysfs(&usbvision->vdev);
1601
1602         PDEBUG(DBG_PROBE, "success");
1603         return 0;
1604
1605 err_pkt:
1606         usbvision_release(usbvision);
1607 err_usb:
1608         usb_put_dev(dev);
1609         return ret;
1610 }
1611
1612
1613 /*
1614  * usbvision_disconnect()
1615  *
1616  * This procedure stops all driver activity, deallocates interface-private
1617  * structure (pointed by 'ptr') and after that driver should be removable
1618  * with no ill consequences.
1619  *
1620  */
1621 static void usbvision_disconnect(struct usb_interface *intf)
1622 {
1623         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1624
1625         PDEBUG(DBG_PROBE, "");
1626
1627         if (usbvision == NULL) {
1628                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1629                 return;
1630         }
1631
1632         mutex_lock(&usbvision->v4l2_lock);
1633
1634         /* At this time we ask to cancel outstanding URBs */
1635         usbvision_stop_isoc(usbvision);
1636
1637         v4l2_device_disconnect(&usbvision->v4l2_dev);
1638
1639         if (usbvision->power) {
1640                 usbvision_i2c_unregister(usbvision);
1641                 usbvision_power_off(usbvision);
1642         }
1643         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1644
1645         usb_put_dev(usbvision->dev);
1646         usbvision->dev = NULL;  /* USB device is no more */
1647
1648         mutex_unlock(&usbvision->v4l2_lock);
1649
1650         if (usbvision->user) {
1651                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1652                        __func__);
1653                 wake_up_interruptible(&usbvision->wait_frame);
1654                 wake_up_interruptible(&usbvision->wait_stream);
1655         } else {
1656                 usbvision_release(usbvision);
1657         }
1658
1659         PDEBUG(DBG_PROBE, "success");
1660 }
1661
1662 static struct usb_driver usbvision_driver = {
1663         .name           = "usbvision",
1664         .id_table       = usbvision_table,
1665         .probe          = usbvision_probe,
1666         .disconnect     = usbvision_disconnect,
1667 };
1668
1669 /*
1670  * usbvision_init()
1671  *
1672  * This code is run to initialize the driver.
1673  *
1674  */
1675 static int __init usbvision_init(void)
1676 {
1677         int err_code;
1678
1679         PDEBUG(DBG_PROBE, "");
1680
1681         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1682         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1683         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1684
1685         /* disable planar mode support unless compression enabled */
1686         if (isoc_mode != ISOC_MODE_COMPRESS) {
1687                 /* FIXME : not the right way to set supported flag */
1688                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1689                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1690         }
1691
1692         err_code = usb_register(&usbvision_driver);
1693
1694         if (err_code == 0) {
1695                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1696                 PDEBUG(DBG_PROBE, "success");
1697         }
1698         return err_code;
1699 }
1700
1701 static void __exit usbvision_exit(void)
1702 {
1703         PDEBUG(DBG_PROBE, "");
1704
1705         usb_deregister(&usbvision_driver);
1706         PDEBUG(DBG_PROBE, "success");
1707 }
1708
1709 module_init(usbvision_init);
1710 module_exit(usbvision_exit);